./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i --full-output --architecture 64bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version e19ca921 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 64bit --witnessprinter.graph.data.programhash a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f --- Real Ultimate output --- This is Ultimate 0.2.2-dev-e19ca92 [2021-12-22 13:59:42,180 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-22 13:59:42,181 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-22 13:59:42,233 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-22 13:59:42,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-22 13:59:42,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-22 13:59:42,235 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-22 13:59:42,236 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-22 13:59:42,237 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-22 13:59:42,238 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-22 13:59:42,238 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-22 13:59:42,239 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-22 13:59:42,239 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-22 13:59:42,240 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-22 13:59:42,241 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-22 13:59:42,241 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-22 13:59:42,242 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-22 13:59:42,246 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-22 13:59:42,247 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-22 13:59:42,251 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-22 13:59:42,252 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-22 13:59:42,253 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-22 13:59:42,253 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-22 13:59:42,255 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-22 13:59:42,256 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-22 13:59:42,257 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-22 13:59:42,257 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-22 13:59:42,257 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-22 13:59:42,258 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-22 13:59:42,258 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-22 13:59:42,258 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-22 13:59:42,259 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-22 13:59:42,259 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-22 13:59:42,260 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-22 13:59:42,260 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-22 13:59:42,261 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-22 13:59:42,261 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-22 13:59:42,261 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-22 13:59:42,261 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-22 13:59:42,262 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-22 13:59:42,262 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-22 13:59:42,263 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-64bit-Automizer_Default.epf [2021-12-22 13:59:42,278 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-22 13:59:42,278 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-22 13:59:42,279 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-22 13:59:42,279 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-22 13:59:42,279 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-22 13:59:42,279 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-22 13:59:42,280 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-22 13:59:42,280 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-22 13:59:42,280 INFO L138 SettingsManager]: * Use SBE=true [2021-12-22 13:59:42,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-22 13:59:42,280 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-22 13:59:42,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-22 13:59:42,281 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-12-22 13:59:42,281 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-22 13:59:42,281 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-12-22 13:59:42,281 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-12-22 13:59:42,281 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-22 13:59:42,281 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-12-22 13:59:42,282 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-22 13:59:42,282 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-22 13:59:42,282 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-22 13:59:42,282 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:59:42,282 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-22 13:59:42,282 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-22 13:59:42,282 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-12-22 13:59:42,283 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-22 13:59:42,283 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-22 13:59:42,283 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-12-22 13:59:42,283 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-12-22 13:59:42,283 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-12-22 13:59:42,283 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-22 13:59:42,283 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 64bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a20f0fb44c1e014f700b9e4b1558eda154ddd78bb739e07c9e4f28b94fe2d47f [2021-12-22 13:59:42,439 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-22 13:59:42,451 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-22 13:59:42,453 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-22 13:59:42,454 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-22 13:59:42,454 INFO L275 PluginConnector]: CDTParser initialized [2021-12-22 13:59:42,455 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-12-22 13:59:42,507 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868961c81/6815256e3f14489399f0050e27e43b34/FLAGbc1ebc406 [2021-12-22 13:59:43,034 INFO L306 CDTParser]: Found 1 translation units. [2021-12-22 13:59:43,034 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i [2021-12-22 13:59:43,067 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868961c81/6815256e3f14489399f0050e27e43b34/FLAGbc1ebc406 [2021-12-22 13:59:43,282 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868961c81/6815256e3f14489399f0050e27e43b34 [2021-12-22 13:59:43,284 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-22 13:59:43,286 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-22 13:59:43,288 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-22 13:59:43,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-22 13:59:43,290 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-22 13:59:43,290 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:59:43" (1/1) ... [2021-12-22 13:59:43,292 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f9700a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:43, skipping insertion in model container [2021-12-22 13:59:43,292 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.12 01:59:43" (1/1) ... [2021-12-22 13:59:43,296 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-22 13:59:43,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-22 13:59:43,566 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2021-12-22 13:59:43,573 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2021-12-22 13:59:44,095 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,096 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,096 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,097 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,104 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,105 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,106 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,107 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,108 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,109 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,330 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:59:44,331 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:59:44,332 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:59:44,333 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:59:44,334 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:59:44,334 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:59:44,338 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:59:44,339 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:59:44,339 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:59:44,339 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:59:44,439 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:59:44,671 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,672 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,695 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,696 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,701 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,702 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,720 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,721 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,723 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,724 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,759 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:59:44,788 INFO L203 MainTranslator]: Completed pre-run [2021-12-22 13:59:44,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4501,4514] [2021-12-22 13:59:44,804 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/aws-c-common/aws_hash_table_init_bounded_harness.i[4561,4574] [2021-12-22 13:59:44,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,835 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,837 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,838 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,844 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,845 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,846 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,846 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,846 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,847 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,864 WARN L610 FunctionHandler]: implicit declaration of function __atomic_load_n [2021-12-22 13:59:44,865 WARN L610 FunctionHandler]: implicit declaration of function __atomic_store_n [2021-12-22 13:59:44,865 WARN L610 FunctionHandler]: implicit declaration of function __atomic_exchange_n [2021-12-22 13:59:44,866 WARN L610 FunctionHandler]: implicit declaration of function __atomic_compare_exchange_n [2021-12-22 13:59:44,866 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_add [2021-12-22 13:59:44,866 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_sub [2021-12-22 13:59:44,867 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_or [2021-12-22 13:59:44,867 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_and [2021-12-22 13:59:44,867 WARN L610 FunctionHandler]: implicit declaration of function __atomic_fetch_xor [2021-12-22 13:59:44,867 WARN L610 FunctionHandler]: implicit declaration of function __atomic_thread_fence [2021-12-22 13:59:44,886 WARN L610 FunctionHandler]: implicit declaration of function __builtin_va_copy [2021-12-22 13:59:44,958 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,959 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,962 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,963 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,965 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,972 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,973 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,974 WARN L1533 CHandler]: Possible shadowing of function index [2021-12-22 13:59:44,985 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-22 13:59:45,166 INFO L208 MainTranslator]: Completed translation [2021-12-22 13:59:45,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45 WrapperNode [2021-12-22 13:59:45,166 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-22 13:59:45,167 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-22 13:59:45,167 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-22 13:59:45,168 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-22 13:59:45,172 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,239 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,321 INFO L137 Inliner]: procedures = 774, calls = 2430, calls flagged for inlining = 67, calls inlined = 13, statements flattened = 800 [2021-12-22 13:59:45,321 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-22 13:59:45,322 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-22 13:59:45,323 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-22 13:59:45,323 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-22 13:59:45,328 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,329 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,344 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,345 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,400 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,413 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-22 13:59:45,416 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-22 13:59:45,417 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-22 13:59:45,417 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-22 13:59:45,418 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (1/1) ... [2021-12-22 13:59:45,423 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-22 13:59:45,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:45,460 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-22 13:59:45,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-22 13:59:45,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~real [2021-12-22 13:59:45,507 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_bool [2021-12-22 13:59:45,507 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_bool [2021-12-22 13:59:45,507 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-22 13:59:45,507 INFO L130 BoogieDeclarations]: Found specification of procedure aws_raise_error [2021-12-22 13:59:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_raise_error [2021-12-22 13:59:45,508 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-12-22 13:59:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-12-22 13:59:45,508 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_is_valid [2021-12-22 13:59:45,508 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_is_valid [2021-12-22 13:59:45,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-22 13:59:45,509 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-22 13:59:45,509 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-22 13:59:45,509 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-22 13:59:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-22 13:59:45,509 INFO L130 BoogieDeclarations]: Found specification of procedure aws_mul_size_checked [2021-12-22 13:59:45,509 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_mul_size_checked [2021-12-22 13:59:45,510 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-22 13:59:45,510 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_plus [2021-12-22 13:59:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_plus [2021-12-22 13:59:45,510 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-12-22 13:59:45,510 INFO L130 BoogieDeclarations]: Found specification of procedure nondet_uint64_t [2021-12-22 13:59:45,510 INFO L138 BoogieDeclarations]: Found implementation of procedure nondet_uint64_t [2021-12-22 13:59:45,510 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-22 13:59:45,510 INFO L130 BoogieDeclarations]: Found specification of procedure aws_is_power_of_two [2021-12-22 13:59:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_is_power_of_two [2021-12-22 13:59:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure s_update_template_size [2021-12-22 13:59:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure s_update_template_size [2021-12-22 13:59:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-22 13:59:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure aws_allocator_is_valid [2021-12-22 13:59:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_allocator_is_valid [2021-12-22 13:59:45,511 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_calloc [2021-12-22 13:59:45,511 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_calloc [2021-12-22 13:59:45,512 INFO L130 BoogieDeclarations]: Found specification of procedure write~real [2021-12-22 13:59:45,512 INFO L130 BoogieDeclarations]: Found specification of procedure hash_table_state_required_bytes [2021-12-22 13:59:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure hash_table_state_required_bytes [2021-12-22 13:59:45,512 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2021-12-22 13:59:45,512 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2021-12-22 13:59:45,512 INFO L130 BoogieDeclarations]: Found specification of procedure aws_hash_table_is_valid [2021-12-22 13:59:45,513 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_hash_table_is_valid [2021-12-22 13:59:45,513 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-22 13:59:45,513 INFO L130 BoogieDeclarations]: Found specification of procedure can_fail_allocator [2021-12-22 13:59:45,514 INFO L138 BoogieDeclarations]: Found implementation of procedure can_fail_allocator [2021-12-22 13:59:45,515 INFO L130 BoogieDeclarations]: Found specification of procedure __CPROVER_overflow_mult [2021-12-22 13:59:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure __CPROVER_overflow_mult [2021-12-22 13:59:45,515 INFO L130 BoogieDeclarations]: Found specification of procedure aws_add_size_checked [2021-12-22 13:59:45,515 INFO L138 BoogieDeclarations]: Found implementation of procedure aws_add_size_checked [2021-12-22 13:59:45,516 INFO L130 BoogieDeclarations]: Found specification of procedure s_alloc_state [2021-12-22 13:59:45,516 INFO L138 BoogieDeclarations]: Found implementation of procedure s_alloc_state [2021-12-22 13:59:45,516 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-22 13:59:45,805 INFO L234 CfgBuilder]: Building ICFG [2021-12-22 13:59:45,807 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-22 13:59:46,507 INFO L766 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##9: assume !true; [2021-12-22 13:59:46,518 INFO L275 CfgBuilder]: Performing block encoding [2021-12-22 13:59:46,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-22 13:59:46,525 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-22 13:59:46,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:59:46 BoogieIcfgContainer [2021-12-22 13:59:46,528 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-22 13:59:46,529 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-22 13:59:46,529 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-22 13:59:46,531 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-22 13:59:46,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.12 01:59:43" (1/3) ... [2021-12-22 13:59:46,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d40e0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:59:46, skipping insertion in model container [2021-12-22 13:59:46,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.12 01:59:45" (2/3) ... [2021-12-22 13:59:46,533 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5d40e0d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.12 01:59:46, skipping insertion in model container [2021-12-22 13:59:46,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.12 01:59:46" (3/3) ... [2021-12-22 13:59:46,534 INFO L111 eAbstractionObserver]: Analyzing ICFG aws_hash_table_init_bounded_harness.i [2021-12-22 13:59:46,542 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-22 13:59:46,542 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-12-22 13:59:46,583 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-22 13:59:46,595 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-22 13:59:46,597 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-12-22 13:59:46,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 170 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 113 states have internal predecessors, (137), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) [2021-12-22 13:59:46,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-22 13:59:46,618 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:46,619 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:46,619 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:46,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:46,624 INFO L85 PathProgramCache]: Analyzing trace with hash -1130665699, now seen corresponding path program 1 times [2021-12-22 13:59:46,631 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:46,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077101264] [2021-12-22 13:59:46,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:46,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:46,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,000 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:47,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:47,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,021 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:59:47,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 13:59:47,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,037 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:59:47,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:59:47,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,054 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 13:59:47,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,062 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:59:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,081 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:59:47,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,098 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:59:47,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,113 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:47,113 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:47,113 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1077101264] [2021-12-22 13:59:47,114 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1077101264] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:47,114 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:47,114 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-22 13:59:47,115 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1436466919] [2021-12-22 13:59:47,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:47,118 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-22 13:59:47,118 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:47,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-22 13:59:47,135 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:59:47,137 INFO L87 Difference]: Start difference. First operand has 170 states, 113 states have (on average 1.2123893805309736) internal successors, (137), 113 states have internal predecessors, (137), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (38), 38 states have call predecessors, (38), 38 states have call successors, (38) Second operand has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 13:59:47,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:47,506 INFO L93 Difference]: Finished difference Result 337 states and 438 transitions. [2021-12-22 13:59:47,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-22 13:59:47,508 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2021-12-22 13:59:47,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:47,515 INFO L225 Difference]: With dead ends: 337 [2021-12-22 13:59:47,515 INFO L226 Difference]: Without dead ends: 164 [2021-12-22 13:59:47,518 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-22 13:59:47,520 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 42 mSDsluCounter, 61 mSDsCounter, 0 mSdLazyCounter, 80 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 118 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 80 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:47,520 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 256 Invalid, 118 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 80 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:59:47,531 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2021-12-22 13:59:47,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 161. [2021-12-22 13:59:47,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 104 states have (on average 1.1923076923076923) internal successors, (124), 105 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-22 13:59:47,552 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 199 transitions. [2021-12-22 13:59:47,553 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 199 transitions. Word has length 71 [2021-12-22 13:59:47,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:47,554 INFO L470 AbstractCegarLoop]: Abstraction has 161 states and 199 transitions. [2021-12-22 13:59:47,554 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.666666666666666) internal successors, (32), 2 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 13:59:47,554 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 199 transitions. [2021-12-22 13:59:47,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2021-12-22 13:59:47,556 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:47,556 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:47,557 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-22 13:59:47,557 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:47,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:47,557 INFO L85 PathProgramCache]: Analyzing trace with hash -1349366569, now seen corresponding path program 1 times [2021-12-22 13:59:47,557 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:47,558 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3250463] [2021-12-22 13:59:47,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:47,558 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:47,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:47,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,679 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:47,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,687 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:59:47,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 13:59:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:59:47,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:59:47,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,713 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 13:59:47,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:59:47,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:59:47,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,759 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:59:47,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:47,769 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:47,769 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:47,769 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [3250463] [2021-12-22 13:59:47,770 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [3250463] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:47,770 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:47,770 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:59:47,770 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132006099] [2021-12-22 13:59:47,770 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:47,771 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:59:47,771 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:47,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:59:47,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:59:47,772 INFO L87 Difference]: Start difference. First operand 161 states and 199 transitions. Second operand has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 13:59:48,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:48,292 INFO L93 Difference]: Finished difference Result 304 states and 368 transitions. [2021-12-22 13:59:48,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:59:48,292 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 71 [2021-12-22 13:59:48,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:48,294 INFO L225 Difference]: With dead ends: 304 [2021-12-22 13:59:48,294 INFO L226 Difference]: Without dead ends: 170 [2021-12-22 13:59:48,295 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:59:48,295 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 47 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 538 SdHoareTripleChecker+Invalid, 213 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:48,296 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 538 Invalid, 213 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-12-22 13:59:48,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-22 13:59:48,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 163. [2021-12-22 13:59:48,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.1886792452830188) internal successors, (126), 107 states have internal predecessors, (126), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-22 13:59:48,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 201 transitions. [2021-12-22 13:59:48,307 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 201 transitions. Word has length 71 [2021-12-22 13:59:48,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:48,307 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 201 transitions. [2021-12-22 13:59:48,308 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.4) internal successors, (32), 4 states have internal predecessors, (32), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 13:59:48,308 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 201 transitions. [2021-12-22 13:59:48,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2021-12-22 13:59:48,309 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:48,309 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:48,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-22 13:59:48,309 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:48,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:48,310 INFO L85 PathProgramCache]: Analyzing trace with hash -721748580, now seen corresponding path program 1 times [2021-12-22 13:59:48,310 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:48,310 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399807450] [2021-12-22 13:59:48,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:48,310 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:48,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,439 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:48,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,445 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:48,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,451 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:59:48,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,457 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 13:59:48,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,463 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:59:48,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,469 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:59:48,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 13:59:48,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:59:48,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,499 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:59:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2021-12-22 13:59:48,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:48,534 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:48,535 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:48,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399807450] [2021-12-22 13:59:48,535 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399807450] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:48,535 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:48,535 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:59:48,535 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130737916] [2021-12-22 13:59:48,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:48,536 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:59:48,536 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:48,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:59:48,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:59:48,537 INFO L87 Difference]: Start difference. First operand 163 states and 201 transitions. Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 13:59:48,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:48,892 INFO L93 Difference]: Finished difference Result 212 states and 254 transitions. [2021-12-22 13:59:48,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:59:48,892 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) Word has length 73 [2021-12-22 13:59:48,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:48,894 INFO L225 Difference]: With dead ends: 212 [2021-12-22 13:59:48,894 INFO L226 Difference]: Without dead ends: 170 [2021-12-22 13:59:48,894 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:59:48,895 INFO L933 BasicCegarLoop]: 183 mSDtfsCounter, 42 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 536 SdHoareTripleChecker+Invalid, 214 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:48,895 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 536 Invalid, 214 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 13:59:48,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2021-12-22 13:59:48,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 167. [2021-12-22 13:59:48,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 167 states, 109 states have (on average 1.18348623853211) internal successors, (129), 110 states have internal predecessors, (129), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 38 states have call predecessors, (38), 37 states have call successors, (38) [2021-12-22 13:59:48,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 167 states to 167 states and 205 transitions. [2021-12-22 13:59:48,904 INFO L78 Accepts]: Start accepts. Automaton has 167 states and 205 transitions. Word has length 73 [2021-12-22 13:59:48,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:48,904 INFO L470 AbstractCegarLoop]: Abstraction has 167 states and 205 transitions. [2021-12-22 13:59:48,904 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (11), 3 states have call predecessors, (11), 2 states have return successors, (10), 3 states have call predecessors, (10), 2 states have call successors, (10) [2021-12-22 13:59:48,904 INFO L276 IsEmpty]: Start isEmpty. Operand 167 states and 205 transitions. [2021-12-22 13:59:48,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2021-12-22 13:59:48,905 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:48,906 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:48,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-22 13:59:48,906 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:48,906 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:48,906 INFO L85 PathProgramCache]: Analyzing trace with hash -898091516, now seen corresponding path program 1 times [2021-12-22 13:59:48,906 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:48,907 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [873662850] [2021-12-22 13:59:48,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:48,907 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:48,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,006 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:49,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,012 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:49,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,018 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:59:49,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 13:59:49,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,029 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:59:49,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:59:49,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 13:59:49,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,046 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:59:49,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:59:49,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,074 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2021-12-22 13:59:49,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2021-12-22 13:59:49,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:49,089 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:49,089 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:49,089 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [873662850] [2021-12-22 13:59:49,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [873662850] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:49,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:49,089 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-22 13:59:49,090 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1399702971] [2021-12-22 13:59:49,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:49,090 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-22 13:59:49,090 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-22 13:59:49,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:59:49,091 INFO L87 Difference]: Start difference. First operand 167 states and 205 transitions. Second operand has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 13:59:49,676 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:49,676 INFO L93 Difference]: Finished difference Result 258 states and 321 transitions. [2021-12-22 13:59:49,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-22 13:59:49,677 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 78 [2021-12-22 13:59:49,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:49,678 INFO L225 Difference]: With dead ends: 258 [2021-12-22 13:59:49,678 INFO L226 Difference]: Without dead ends: 216 [2021-12-22 13:59:49,679 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-12-22 13:59:49,679 INFO L933 BasicCegarLoop]: 180 mSDtfsCounter, 93 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 63 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 336 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 63 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:49,679 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [102 Valid, 578 Invalid, 336 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [63 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-12-22 13:59:49,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216 states. [2021-12-22 13:59:49,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216 to 163. [2021-12-22 13:59:49,688 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 163 states, 106 states have (on average 1.169811320754717) internal successors, (124), 107 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 18 states have return successors, (37), 37 states have call predecessors, (37), 37 states have call successors, (37) [2021-12-22 13:59:49,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 199 transitions. [2021-12-22 13:59:49,689 INFO L78 Accepts]: Start accepts. Automaton has 163 states and 199 transitions. Word has length 78 [2021-12-22 13:59:49,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:49,689 INFO L470 AbstractCegarLoop]: Abstraction has 163 states and 199 transitions. [2021-12-22 13:59:49,689 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.166666666666667) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (12), 4 states have call predecessors, (12), 1 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2021-12-22 13:59:49,689 INFO L276 IsEmpty]: Start isEmpty. Operand 163 states and 199 transitions. [2021-12-22 13:59:49,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2021-12-22 13:59:49,691 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:49,691 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:49,691 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-22 13:59:49,691 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:49,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:49,692 INFO L85 PathProgramCache]: Analyzing trace with hash 1146908147, now seen corresponding path program 1 times [2021-12-22 13:59:49,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:49,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967564856] [2021-12-22 13:59:49,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:49,692 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:49,737 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:59:49,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [831294215] [2021-12-22 13:59:49,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:49,738 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:49,738 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:49,739 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:49,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-22 13:59:50,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 2373 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 13:59:50,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:50,344 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:50,345 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:50,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:50,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [967564856] [2021-12-22 13:59:50,345 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 13:59:50,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [831294215] [2021-12-22 13:59:50,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [831294215] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:50,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:50,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 13:59:50,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142660822] [2021-12-22 13:59:50,346 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:50,347 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 13:59:50,347 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:50,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 13:59:50,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 13:59:50,347 INFO L87 Difference]: Start difference. First operand 163 states and 199 transitions. Second operand has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 13:59:50,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:50,367 INFO L93 Difference]: Finished difference Result 277 states and 333 transitions. [2021-12-22 13:59:50,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 13:59:50,368 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 95 [2021-12-22 13:59:50,368 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:50,369 INFO L225 Difference]: With dead ends: 277 [2021-12-22 13:59:50,369 INFO L226 Difference]: Without dead ends: 168 [2021-12-22 13:59:50,369 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 13:59:50,370 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 2 mSDsluCounter, 578 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 772 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:50,370 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 772 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:59:50,371 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-22 13:59:50,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-22 13:59:50,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.1636363636363636) internal successors, (128), 111 states have internal predecessors, (128), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (40), 38 states have call predecessors, (40), 37 states have call successors, (40) [2021-12-22 13:59:50,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 206 transitions. [2021-12-22 13:59:50,379 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 206 transitions. Word has length 95 [2021-12-22 13:59:50,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:50,379 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 206 transitions. [2021-12-22 13:59:50,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.6) internal successors, (48), 5 states have internal predecessors, (48), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2021-12-22 13:59:50,379 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 206 transitions. [2021-12-22 13:59:50,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 13:59:50,380 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:50,381 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:50,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:50,611 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:50,612 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:50,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:50,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1882124116, now seen corresponding path program 1 times [2021-12-22 13:59:50,612 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:50,612 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444464144] [2021-12-22 13:59:50,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:50,613 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:50,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,729 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:50,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,735 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:50,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,741 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:59:50,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 13:59:50,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,755 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:59:50,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,760 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:59:50,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,766 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 13:59:50,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,771 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:59:50,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:59:50,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,802 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:59:50,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,814 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:50,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:50,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,848 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:50,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,862 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:50,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:59:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:51,020 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:51,020 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:51,020 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444464144] [2021-12-22 13:59:51,021 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444464144] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:51,021 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:51,021 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2021-12-22 13:59:51,021 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140468224] [2021-12-22 13:59:51,021 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:51,022 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-22 13:59:51,022 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:51,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-22 13:59:51,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2021-12-22 13:59:51,023 INFO L87 Difference]: Start difference. First operand 168 states and 206 transitions. Second operand has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 13:59:52,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:52,717 INFO L93 Difference]: Finished difference Result 264 states and 328 transitions. [2021-12-22 13:59:52,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-12-22 13:59:52,718 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2021-12-22 13:59:52,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:52,719 INFO L225 Difference]: With dead ends: 264 [2021-12-22 13:59:52,719 INFO L226 Difference]: Without dead ends: 220 [2021-12-22 13:59:52,719 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=217, Unknown=0, NotChecked=0, Total=306 [2021-12-22 13:59:52,720 INFO L933 BasicCegarLoop]: 169 mSDtfsCounter, 215 mSDsluCounter, 734 mSDsCounter, 0 mSdLazyCounter, 747 mSolverCounterSat, 178 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 230 SdHoareTripleChecker+Valid, 903 SdHoareTripleChecker+Invalid, 925 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 178 IncrementalHoareTripleChecker+Valid, 747 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:52,720 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [230 Valid, 903 Invalid, 925 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [178 Valid, 747 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-12-22 13:59:52,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 220 states. [2021-12-22 13:59:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 220 to 173. [2021-12-22 13:59:52,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 114 states have (on average 1.1666666666666667) internal successors, (133), 116 states have internal predecessors, (133), 38 states have call successors, (38), 18 states have call predecessors, (38), 20 states have return successors, (41), 38 states have call predecessors, (41), 37 states have call successors, (41) [2021-12-22 13:59:52,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 212 transitions. [2021-12-22 13:59:52,730 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 212 transitions. Word has length 101 [2021-12-22 13:59:52,730 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:52,730 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 212 transitions. [2021-12-22 13:59:52,730 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.7272727272727275) internal successors, (52), 9 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 13:59:52,730 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 212 transitions. [2021-12-22 13:59:52,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2021-12-22 13:59:52,731 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:52,735 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:52,735 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-22 13:59:52,735 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:52,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:52,736 INFO L85 PathProgramCache]: Analyzing trace with hash 1489097106, now seen corresponding path program 1 times [2021-12-22 13:59:52,736 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:52,737 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873997032] [2021-12-22 13:59:52,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:52,737 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:52,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,844 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:52,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,850 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:52,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,855 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:59:52,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,861 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 13:59:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,868 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:59:52,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,882 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:59:52,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 13:59:52,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,899 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:59:52,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,916 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:59:52,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,934 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:59:52,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,948 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:52,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,961 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:52,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,973 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:52,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:52,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:52,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:59:52,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:53,036 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:53,036 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:53,036 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873997032] [2021-12-22 13:59:53,036 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873997032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:53,036 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:53,036 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-22 13:59:53,036 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [969269851] [2021-12-22 13:59:53,036 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:53,037 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-22 13:59:53,037 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:53,037 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-22 13:59:53,037 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-22 13:59:53,037 INFO L87 Difference]: Start difference. First operand 173 states and 212 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 13:59:53,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:53,805 INFO L93 Difference]: Finished difference Result 271 states and 336 transitions. [2021-12-22 13:59:53,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 13:59:53,805 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 101 [2021-12-22 13:59:53,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:53,807 INFO L225 Difference]: With dead ends: 271 [2021-12-22 13:59:53,807 INFO L226 Difference]: Without dead ends: 222 [2021-12-22 13:59:53,807 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-12-22 13:59:53,808 INFO L933 BasicCegarLoop]: 182 mSDtfsCounter, 110 mSDsluCounter, 425 mSDsCounter, 0 mSdLazyCounter, 351 mSolverCounterSat, 70 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 125 SdHoareTripleChecker+Valid, 607 SdHoareTripleChecker+Invalid, 421 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 70 IncrementalHoareTripleChecker+Valid, 351 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:53,808 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [125 Valid, 607 Invalid, 421 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [70 Valid, 351 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-12-22 13:59:53,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-22 13:59:53,814 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 175. [2021-12-22 13:59:53,815 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1652173913043478) internal successors, (134), 117 states have internal predecessors, (134), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-22 13:59:53,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 215 transitions. [2021-12-22 13:59:53,828 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 215 transitions. Word has length 101 [2021-12-22 13:59:53,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:53,828 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 215 transitions. [2021-12-22 13:59:53,829 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 5 states have internal predecessors, (52), 3 states have call successors, (16), 5 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2021-12-22 13:59:53,829 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 215 transitions. [2021-12-22 13:59:53,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2021-12-22 13:59:53,830 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:53,830 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:53,830 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-22 13:59:53,830 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:53,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:53,831 INFO L85 PathProgramCache]: Analyzing trace with hash 149844693, now seen corresponding path program 1 times [2021-12-22 13:59:53,831 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:53,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557142783] [2021-12-22 13:59:53,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:53,831 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:53,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:53,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:53,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:53,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:53,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:53,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:59:53,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:53,994 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 13:59:53,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:53,998 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:59:53,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,003 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:59:54,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 13:59:54,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:59:54,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,028 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:59:54,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,040 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:59:54,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,063 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:54,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,073 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,086 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:54,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:54,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:59:54,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,153 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:54,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:54,186 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:54,186 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:54,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557142783] [2021-12-22 13:59:54,186 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557142783] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:54,187 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:54,187 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2021-12-22 13:59:54,187 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806857009] [2021-12-22 13:59:54,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:54,187 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-22 13:59:54,188 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:54,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-22 13:59:54,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=131, Unknown=0, NotChecked=0, Total=156 [2021-12-22 13:59:54,188 INFO L87 Difference]: Start difference. First operand 175 states and 215 transitions. Second operand has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 13:59:56,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:56,268 INFO L93 Difference]: Finished difference Result 293 states and 372 transitions. [2021-12-22 13:59:56,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:59:56,269 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 107 [2021-12-22 13:59:56,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:56,272 INFO L225 Difference]: With dead ends: 293 [2021-12-22 13:59:56,272 INFO L226 Difference]: Without dead ends: 240 [2021-12-22 13:59:56,272 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 49 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-12-22 13:59:56,273 INFO L933 BasicCegarLoop]: 174 mSDtfsCounter, 115 mSDsluCounter, 1164 mSDsCounter, 0 mSdLazyCounter, 914 mSolverCounterSat, 83 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 1338 SdHoareTripleChecker+Invalid, 997 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 83 IncrementalHoareTripleChecker+Valid, 914 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:56,273 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [128 Valid, 1338 Invalid, 997 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [83 Valid, 914 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2021-12-22 13:59:56,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 240 states. [2021-12-22 13:59:56,282 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 240 to 175. [2021-12-22 13:59:56,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1565217391304348) internal successors, (133), 117 states have internal predecessors, (133), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-22 13:59:56,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 214 transitions. [2021-12-22 13:59:56,290 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 214 transitions. Word has length 107 [2021-12-22 13:59:56,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:56,290 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 214 transitions. [2021-12-22 13:59:56,290 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 4.666666666666667) internal successors, (56), 9 states have internal predecessors, (56), 4 states have call successors, (17), 5 states have call predecessors, (17), 4 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2021-12-22 13:59:56,291 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 214 transitions. [2021-12-22 13:59:56,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2021-12-22 13:59:56,291 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:56,292 INFO L514 BasicCegarLoop]: trace histogram [7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:56,292 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-22 13:59:56,292 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:56,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:56,292 INFO L85 PathProgramCache]: Analyzing trace with hash -1438548646, now seen corresponding path program 1 times [2021-12-22 13:59:56,293 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:56,293 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1839539459] [2021-12-22 13:59:56,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:56,293 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:56,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,437 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:56,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2021-12-22 13:59:56,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,449 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2021-12-22 13:59:56,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,455 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2021-12-22 13:59:56,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,460 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2021-12-22 13:59:56,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,466 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-12-22 13:59:56,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,475 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2021-12-22 13:59:56,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,481 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2021-12-22 13:59:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,497 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2021-12-22 13:59:56,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,509 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 59 [2021-12-22 13:59:56,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,535 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:56,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,547 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:56,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,561 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2021-12-22 13:59:56,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,573 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2021-12-22 13:59:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,579 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 89 [2021-12-22 13:59:56,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,734 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-12-22 13:59:56,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2021-12-22 13:59:56,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:56,821 INFO L134 CoverageAnalysis]: Checked inductivity of 84 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2021-12-22 13:59:56,822 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:56,822 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1839539459] [2021-12-22 13:59:56,822 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1839539459] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:56,822 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:56,822 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2021-12-22 13:59:56,822 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915568811] [2021-12-22 13:59:56,822 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:56,823 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-22 13:59:56,823 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:56,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-22 13:59:56,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2021-12-22 13:59:56,824 INFO L87 Difference]: Start difference. First operand 175 states and 214 transitions. Second operand has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 13:59:58,413 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:58,413 INFO L93 Difference]: Finished difference Result 280 states and 344 transitions. [2021-12-22 13:59:58,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-12-22 13:59:58,413 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 112 [2021-12-22 13:59:58,414 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:58,415 INFO L225 Difference]: With dead ends: 280 [2021-12-22 13:59:58,415 INFO L226 Difference]: Without dead ends: 222 [2021-12-22 13:59:58,415 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2021-12-22 13:59:58,416 INFO L933 BasicCegarLoop]: 177 mSDtfsCounter, 147 mSDsluCounter, 1160 mSDsCounter, 0 mSdLazyCounter, 797 mSolverCounterSat, 123 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 154 SdHoareTripleChecker+Valid, 1337 SdHoareTripleChecker+Invalid, 920 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 123 IncrementalHoareTripleChecker+Valid, 797 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:58,416 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [154 Valid, 1337 Invalid, 920 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [123 Valid, 797 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-12-22 13:59:58,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 222 states. [2021-12-22 13:59:58,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 222 to 175. [2021-12-22 13:59:58,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1391304347826088) internal successors, (131), 117 states have internal predecessors, (131), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-22 13:59:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 212 transitions. [2021-12-22 13:59:58,423 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 212 transitions. Word has length 112 [2021-12-22 13:59:58,423 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:58,424 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 212 transitions. [2021-12-22 13:59:58,424 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 4.538461538461538) internal successors, (59), 10 states have internal predecessors, (59), 5 states have call successors, (18), 5 states have call predecessors, (18), 4 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2021-12-22 13:59:58,424 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 212 transitions. [2021-12-22 13:59:58,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 148 [2021-12-22 13:59:58,425 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:58,425 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:58,425 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-12-22 13:59:58,425 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:58,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:58,426 INFO L85 PathProgramCache]: Analyzing trace with hash -1044102274, now seen corresponding path program 1 times [2021-12-22 13:59:58,426 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:58,426 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1865215338] [2021-12-22 13:59:58,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:58,426 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:58,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:58,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 13:59:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1865215338] [2021-12-22 13:59:58,549 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2021-12-22 13:59:58,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [812900058] [2021-12-22 13:59:58,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:58,550 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:58,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:58,551 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:58,552 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-22 13:59:59,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 13:59:59,022 INFO L263 TraceCheckSpWp]: Trace formula consists of 2761 conjuncts, 3 conjunts are in the unsatisfiable core [2021-12-22 13:59:59,027 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 13:59:59,268 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 88 trivial. 0 not checked. [2021-12-22 13:59:59,268 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 13:59:59,268 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [812900058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 13:59:59,268 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 13:59:59,268 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 13:59:59,269 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495170994] [2021-12-22 13:59:59,269 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 13:59:59,269 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 13:59:59,269 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 13:59:59,270 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 13:59:59,270 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:59:59,270 INFO L87 Difference]: Start difference. First operand 175 states and 212 transitions. Second operand has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 13:59:59,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 13:59:59,283 INFO L93 Difference]: Finished difference Result 294 states and 348 transitions. [2021-12-22 13:59:59,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 13:59:59,284 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 147 [2021-12-22 13:59:59,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 13:59:59,285 INFO L225 Difference]: With dead ends: 294 [2021-12-22 13:59:59,285 INFO L226 Difference]: Without dead ends: 175 [2021-12-22 13:59:59,285 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 144 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 13:59:59,286 INFO L933 BasicCegarLoop]: 196 mSDtfsCounter, 0 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 5 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 581 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 5 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 13:59:59,286 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 581 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 5 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 13:59:59,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-12-22 13:59:59,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-12-22 13:59:59,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.1261261261261262) internal successors, (125), 113 states have internal predecessors, (125), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2021-12-22 13:59:59,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 203 transitions. [2021-12-22 13:59:59,292 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 203 transitions. Word has length 147 [2021-12-22 13:59:59,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 13:59:59,292 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 203 transitions. [2021-12-22 13:59:59,292 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.75) internal successors, (79), 4 states have internal predecessors, (79), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 13:59:59,292 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 203 transitions. [2021-12-22 13:59:59,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 154 [2021-12-22 13:59:59,293 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 13:59:59,293 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 13:59:59,317 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-22 13:59:59,511 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2021-12-22 13:59:59,511 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 13:59:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 13:59:59,512 INFO L85 PathProgramCache]: Analyzing trace with hash -1263288230, now seen corresponding path program 1 times [2021-12-22 13:59:59,512 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 13:59:59,512 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1403070841] [2021-12-22 13:59:59,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:59,512 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 13:59:59,582 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 13:59:59,583 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1270523235] [2021-12-22 13:59:59,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 13:59:59,583 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 13:59:59,583 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 13:59:59,584 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 13:59:59,585 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-22 14:00:00,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:00,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 2866 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:00:00,091 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:00,316 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 153 trivial. 0 not checked. [2021-12-22 14:00:00,316 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:00:00,316 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:00,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1403070841] [2021-12-22 14:00:00,316 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:00:00,316 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1270523235] [2021-12-22 14:00:00,316 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1270523235] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:00:00,317 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:00:00,317 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:00:00,317 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1792926015] [2021-12-22 14:00:00,317 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:00:00,317 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:00:00,317 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:00,317 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:00:00,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:00:00,318 INFO L87 Difference]: Start difference. First operand 170 states and 203 transitions. Second operand has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 14:00:00,335 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:00,335 INFO L93 Difference]: Finished difference Result 233 states and 275 transitions. [2021-12-22 14:00:00,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:00:00,336 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) Word has length 153 [2021-12-22 14:00:00,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:00,337 INFO L225 Difference]: With dead ends: 233 [2021-12-22 14:00:00,337 INFO L226 Difference]: Without dead ends: 175 [2021-12-22 14:00:00,337 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 153 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:00:00,338 INFO L933 BasicCegarLoop]: 189 mSDtfsCounter, 2 mSDsluCounter, 562 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:00,338 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 751 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:00:00,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-12-22 14:00:00,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2021-12-22 14:00:00,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 115 states have (on average 1.1217391304347826) internal successors, (129), 117 states have internal predecessors, (129), 39 states have call successors, (39), 18 states have call predecessors, (39), 20 states have return successors, (42), 39 states have call predecessors, (42), 38 states have call successors, (42) [2021-12-22 14:00:00,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 210 transitions. [2021-12-22 14:00:00,344 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 210 transitions. Word has length 153 [2021-12-22 14:00:00,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:00,345 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 210 transitions. [2021-12-22 14:00:00,345 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 15.0) internal successors, (75), 5 states have internal predecessors, (75), 2 states have call successors, (24), 2 states have call predecessors, (24), 3 states have return successors, (23), 3 states have call predecessors, (23), 2 states have call successors, (23) [2021-12-22 14:00:00,345 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 210 transitions. [2021-12-22 14:00:00,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2021-12-22 14:00:00,346 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:00,346 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:00,401 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:00,567 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:00,568 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:00,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:00,568 INFO L85 PathProgramCache]: Analyzing trace with hash 1991721113, now seen corresponding path program 1 times [2021-12-22 14:00:00,568 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:00,568 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1023372863] [2021-12-22 14:00:00,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:00,568 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:00,620 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:00,620 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2085900915] [2021-12-22 14:00:00,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:00,621 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:00,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:00,622 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:00,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-22 14:00:01,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:01,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 2870 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-22 14:00:01,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:01,398 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-22 14:00:01,398 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:00:01,398 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:01,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1023372863] [2021-12-22 14:00:01,398 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:00:01,398 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2085900915] [2021-12-22 14:00:01,398 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2085900915] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:00:01,398 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:00:01,398 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:00:01,398 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [897823097] [2021-12-22 14:00:01,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:00:01,399 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:00:01,399 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:01,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:00:01,399 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:00:01,399 INFO L87 Difference]: Start difference. First operand 175 states and 210 transitions. Second operand has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-22 14:00:01,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:01,524 INFO L93 Difference]: Finished difference Result 233 states and 274 transitions. [2021-12-22 14:00:01,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:00:01,525 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) Word has length 159 [2021-12-22 14:00:01,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:01,526 INFO L225 Difference]: With dead ends: 233 [2021-12-22 14:00:01,526 INFO L226 Difference]: Without dead ends: 175 [2021-12-22 14:00:01,526 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 159 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:00:01,526 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 1 mSDsluCounter, 378 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 570 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:01,527 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 570 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-22 14:00:01,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-12-22 14:00:01,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-12-22 14:00:01,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 111 states have (on average 1.117117117117117) internal successors, (124), 113 states have internal predecessors, (124), 39 states have call successors, (39), 18 states have call predecessors, (39), 19 states have return successors, (39), 38 states have call predecessors, (39), 38 states have call successors, (39) [2021-12-22 14:00:01,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 202 transitions. [2021-12-22 14:00:01,532 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 202 transitions. Word has length 159 [2021-12-22 14:00:01,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:01,533 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 202 transitions. [2021-12-22 14:00:01,533 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 19.25) internal successors, (77), 4 states have internal predecessors, (77), 2 states have call successors, (25), 2 states have call predecessors, (25), 2 states have return successors, (24), 2 states have call predecessors, (24), 2 states have call successors, (24) [2021-12-22 14:00:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 202 transitions. [2021-12-22 14:00:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 167 [2021-12-22 14:00:01,534 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:01,534 INFO L514 BasicCegarLoop]: trace histogram [9, 9, 9, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:01,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:01,755 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:01,755 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:01,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:01,756 INFO L85 PathProgramCache]: Analyzing trace with hash -813903192, now seen corresponding path program 1 times [2021-12-22 14:00:01,756 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:01,756 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [954102153] [2021-12-22 14:00:01,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:01,757 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:01,809 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:01,810 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1434284810] [2021-12-22 14:00:01,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:01,810 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:01,810 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:01,812 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:01,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-22 14:00:02,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:02,372 INFO L263 TraceCheckSpWp]: Trace formula consists of 2918 conjuncts, 45 conjunts are in the unsatisfiable core [2021-12-22 14:00:02,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 156 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 156 trivial. 0 not checked. [2021-12-22 14:00:02,670 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:00:02,670 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:02,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [954102153] [2021-12-22 14:00:02,670 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:00:02,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1434284810] [2021-12-22 14:00:02,670 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1434284810] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:00:02,671 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:00:02,671 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2021-12-22 14:00:02,671 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531077708] [2021-12-22 14:00:02,671 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:00:02,671 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-12-22 14:00:02,671 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:02,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-12-22 14:00:02,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2021-12-22 14:00:02,672 INFO L87 Difference]: Start difference. First operand 170 states and 202 transitions. Second operand has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-22 14:00:03,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:03,008 INFO L93 Difference]: Finished difference Result 237 states and 276 transitions. [2021-12-22 14:00:03,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-22 14:00:03,009 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) Word has length 166 [2021-12-22 14:00:03,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:03,010 INFO L225 Difference]: With dead ends: 237 [2021-12-22 14:00:03,010 INFO L226 Difference]: Without dead ends: 168 [2021-12-22 14:00:03,010 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=127, Unknown=0, NotChecked=0, Total=156 [2021-12-22 14:00:03,011 INFO L933 BasicCegarLoop]: 186 mSDtfsCounter, 5 mSDsluCounter, 1660 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1846 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:03,011 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 1846 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-22 14:00:03,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2021-12-22 14:00:03,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 168. [2021-12-22 14:00:03,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 168 states, 110 states have (on average 1.1) internal successors, (121), 112 states have internal predecessors, (121), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2021-12-22 14:00:03,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 168 states to 168 states and 197 transitions. [2021-12-22 14:00:03,020 INFO L78 Accepts]: Start accepts. Automaton has 168 states and 197 transitions. Word has length 166 [2021-12-22 14:00:03,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:03,020 INFO L470 AbstractCegarLoop]: Abstraction has 168 states and 197 transitions. [2021-12-22 14:00:03,021 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 7.363636363636363) internal successors, (81), 9 states have internal predecessors, (81), 2 states have call successors, (26), 2 states have call predecessors, (26), 4 states have return successors, (25), 4 states have call predecessors, (25), 2 states have call successors, (25) [2021-12-22 14:00:03,021 INFO L276 IsEmpty]: Start isEmpty. Operand 168 states and 197 transitions. [2021-12-22 14:00:03,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-22 14:00:03,023 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:03,023 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:03,057 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:03,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-12-22 14:00:03,245 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:03,246 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:03,246 INFO L85 PathProgramCache]: Analyzing trace with hash -1768858678, now seen corresponding path program 1 times [2021-12-22 14:00:03,246 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:03,246 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553082716] [2021-12-22 14:00:03,246 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:03,246 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:03,366 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:03,366 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [317304830] [2021-12-22 14:00:03,366 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:03,366 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:03,412 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:03,414 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:03,416 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-22 14:00:04,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:04,121 INFO L263 TraceCheckSpWp]: Trace formula consists of 3100 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-22 14:00:04,126 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:04,398 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-22 14:00:04,399 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:00:04,399 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:04,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553082716] [2021-12-22 14:00:04,399 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:00:04,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [317304830] [2021-12-22 14:00:04,399 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [317304830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:00:04,399 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:00:04,399 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-22 14:00:04,399 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426658429] [2021-12-22 14:00:04,399 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:00:04,400 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-22 14:00:04,400 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:04,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-22 14:00:04,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-22 14:00:04,400 INFO L87 Difference]: Start difference. First operand 168 states and 197 transitions. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-22 14:00:04,423 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:04,425 INFO L93 Difference]: Finished difference Result 324 states and 374 transitions. [2021-12-22 14:00:04,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-22 14:00:04,426 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2021-12-22 14:00:04,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:04,427 INFO L225 Difference]: With dead ends: 324 [2021-12-22 14:00:04,428 INFO L226 Difference]: Without dead ends: 177 [2021-12-22 14:00:04,429 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 188 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:00:04,430 INFO L933 BasicCegarLoop]: 190 mSDtfsCounter, 9 mSDsluCounter, 371 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 561 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:04,431 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 561 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:00:04,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2021-12-22 14:00:04,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 171. [2021-12-22 14:00:04,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.0973451327433628) internal successors, (124), 115 states have internal predecessors, (124), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2021-12-22 14:00:04,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 200 transitions. [2021-12-22 14:00:04,443 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 200 transitions. Word has length 191 [2021-12-22 14:00:04,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:04,459 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 200 transitions. [2021-12-22 14:00:04,459 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-22 14:00:04,460 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 200 transitions. [2021-12-22 14:00:04,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 192 [2021-12-22 14:00:04,462 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:04,463 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:04,509 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:04,676 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:04,677 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:04,677 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:04,677 INFO L85 PathProgramCache]: Analyzing trace with hash -1342304180, now seen corresponding path program 1 times [2021-12-22 14:00:04,677 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:04,677 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391990780] [2021-12-22 14:00:04,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:04,678 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:04,752 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:04,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1804228509] [2021-12-22 14:00:04,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:04,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:04,753 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:04,753 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:04,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-22 14:00:05,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-22 14:00:05,394 INFO L263 TraceCheckSpWp]: Trace formula consists of 3098 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-22 14:00:05,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-22 14:00:05,640 INFO L134 CoverageAnalysis]: Checked inductivity of 250 backedges. 115 proven. 0 refuted. 0 times theorem prover too weak. 135 trivial. 0 not checked. [2021-12-22 14:00:05,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-22 14:00:05,640 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-22 14:00:05,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391990780] [2021-12-22 14:00:05,641 WARN L312 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2021-12-22 14:00:05,641 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1804228509] [2021-12-22 14:00:05,641 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1804228509] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-22 14:00:05,641 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-22 14:00:05,641 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-22 14:00:05,641 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [944278961] [2021-12-22 14:00:05,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-22 14:00:05,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-22 14:00:05,643 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-22 14:00:05,651 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-22 14:00:05,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-22 14:00:05,652 INFO L87 Difference]: Start difference. First operand 171 states and 200 transitions. Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-22 14:00:05,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-22 14:00:05,698 INFO L93 Difference]: Finished difference Result 324 states and 371 transitions. [2021-12-22 14:00:05,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-22 14:00:05,700 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) Word has length 191 [2021-12-22 14:00:05,700 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-22 14:00:05,701 INFO L225 Difference]: With dead ends: 324 [2021-12-22 14:00:05,701 INFO L226 Difference]: Without dead ends: 181 [2021-12-22 14:00:05,702 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-22 14:00:05,702 INFO L933 BasicCegarLoop]: 194 mSDtfsCounter, 33 mSDsluCounter, 356 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-22 14:00:05,702 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 550 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-22 14:00:05,703 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-12-22 14:00:05,707 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 171. [2021-12-22 14:00:05,707 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 171 states, 113 states have (on average 1.0884955752212389) internal successors, (123), 115 states have internal predecessors, (123), 38 states have call successors, (38), 18 states have call predecessors, (38), 19 states have return successors, (38), 37 states have call predecessors, (38), 37 states have call successors, (38) [2021-12-22 14:00:05,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 171 states to 171 states and 199 transitions. [2021-12-22 14:00:05,708 INFO L78 Accepts]: Start accepts. Automaton has 171 states and 199 transitions. Word has length 191 [2021-12-22 14:00:05,708 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-22 14:00:05,709 INFO L470 AbstractCegarLoop]: Abstraction has 171 states and 199 transitions. [2021-12-22 14:00:05,709 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (29), 2 states have call predecessors, (29), 2 states have return successors, (28), 2 states have call predecessors, (28), 2 states have call successors, (28) [2021-12-22 14:00:05,709 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states and 199 transitions. [2021-12-22 14:00:05,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 193 [2021-12-22 14:00:05,713 INFO L506 BasicCegarLoop]: Found error trace [2021-12-22 14:00:05,714 INFO L514 BasicCegarLoop]: trace histogram [11, 11, 11, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-22 14:00:05,740 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-22 14:00:05,914 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:05,914 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-12-22 14:00:05,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-22 14:00:05,915 INFO L85 PathProgramCache]: Analyzing trace with hash 538724999, now seen corresponding path program 1 times [2021-12-22 14:00:05,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-22 14:00:05,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655381248] [2021-12-22 14:00:05,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:05,915 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-22 14:00:06,020 ERROR L247 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2021-12-22 14:00:06,020 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1363795501] [2021-12-22 14:00:06,020 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-22 14:00:06,021 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-22 14:00:06,021 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-22 14:00:06,022 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-22 14:00:06,023 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process